Hi Bret,

Here is the branch and PR I just created for this change, please help review. Thanks.
https://github.com/dandanbi/edk2/tree/RegisterFilterLibV2
https://github.com/tianocore/edk2/pull/1509



Thanks,
Dandan

From: Bret Barkelew <Bret.Barkelew@microsoft.com>
Sent: Tuesday, March 23, 2021 2:25 AM
To: Bi, Dandan <dandan.bi@intel.com>; devel@edk2.groups.io
Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Sean Brogan <sean.brogan@microsoft.com>
Subject: RE: [EXTERNAL] [patch V2 27/29] UnitTestFrameworkPkg: Consume MdeLibs.dsc.inc for RegisterFilterLib

Is there a PR somewhere that has a branch with all these changes applied? I'd like to poke around a little.

Thanks!

- Bret

From: Dandan Bi<mailto:dandan.bi@intel.com>
Sent: Monday, March 22, 2021 1:10 AM
To: devel@edk2.groups.io<mailto:devel@edk2.groups.io>
Cc: Kinney, Michael D<mailto:michael.d.kinney@intel.com>; Sean Brogan<mailto:sean.brogan@microsoft.com>; Bret Barkelew<mailto:Bret.Barkelew@microsoft.com>
Subject: [EXTERNAL] [patch V2 27/29] UnitTestFrameworkPkg: Consume MdeLibs.dsc.inc for RegisterFilterLib

REF: https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.tianocore.org%2Fshow_bug.cgi%3Fid%3D3246&amp;data=04%7C01%7CBret.Barkelew%40microsoft.com%7C77dd99e3296941afb9b408d8ed09fd3c%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637519974445661033%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=oDafPDNi1k2MRYGrp%2Frhy1dB43tk%2B0YwF8%2FxdLqBXt8%3D&amp;reserved=0

MdeLibs.dsc.inc was added for some basic/default library
instances provided by MdePkg and RegisterFilterLibNull Library
was also added into it as the first version of MdeLibs.dsc.inc.

So update platform dsc to consume MdeLibs.dsc.inc for
RegisterFilterLibNull which will be consumed by IoLib and BaseLib.

Cc: Michael D Kinney <michael.d.kinney@intel.com<mailto:michael.d.kinney@intel.com>>
Cc: Sean Brogan <sean.brogan@microsoft.com<mailto:sean.brogan@microsoft.com>>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com<mailto:Bret.Barkelew@microsoft.com>>
Signed-off-by: Dandan Bi <dandan.bi@intel.com<mailto:dandan.bi@intel.com>>
---
 UnitTestFrameworkPkg/UnitTestFrameworkPkgTarget.dsc.inc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/UnitTestFrameworkPkg/UnitTestFrameworkPkgTarget.dsc.inc b/UnitTestFrameworkPkg/UnitTestFrameworkPkgTarget.dsc.inc
index 8adf690098..4adb98aff5 100644
--- a/UnitTestFrameworkPkg/UnitTestFrameworkPkgTarget.dsc.inc
+++ b/UnitTestFrameworkPkg/UnitTestFrameworkPkgTarget.dsc.inc
@@ -1,14 +1,16 @@
 ## @file
 # UnitTestFrameworkPkg DSC include file for target based test DSC
 #
-# Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 ##

 [LibraryClasses]
+  !include MdePkg/MdeLibs.dsc.inc
+
   #
   # Entry point
   #
   PeimEntryPoint|MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf
   UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
--
2.18.0.windows.1